If'n only more people would listen to you. They sure as hell don't listen to meI always say.... if it's shooting good.... don't look down the dam thing! Shoot it... clean/maintain it. Enuff said! LOL!
My borescope occupies a place of honor in my toolbox. All the way in the back of the bottom drawer. That's not to say that I think they're worthless, quite the contrary. But man o' man, can a guy ever get himself going down the wrong rabbithole(s) with one.